1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // UNSUPPORTED: c++03
10 
11 // <filesystem>
12 
13 // uintmax_t remove_all(const path& p);
14 // uintmax_t remove_all(const path& p, error_code& ec) noexcept;
15 
16 #include "filesystem_include.h"
17 
18 #include "test_macros.h"
19 #include "rapid-cxx-test.h"
20 #include "filesystem_test_helper.h"
21 
22 using namespace fs;
23 
24 TEST_SUITE(filesystem_remove_all_test_suite)
25 
26 TEST_CASE(test_signatures)
27 {
28     const path p; ((void)p);
29     std::error_code ec; ((void)ec);
30     ASSERT_SAME_TYPE(decltype(fs::remove_all(p)), std::uintmax_t);
31     ASSERT_SAME_TYPE(decltype(fs::remove_all(p, ec)), std::uintmax_t);
32 
33     ASSERT_NOT_NOEXCEPT(fs::remove_all(p));
34     ASSERT_NOT_NOEXCEPT(fs::remove_all(p, ec));
35 }
36 
37 TEST_CASE(test_error_reporting)
38 {
39     scoped_test_env env;
40     // Windows doesn't support setting perms::none to trigger failures
41     // reading directories.
42 #ifndef TEST_WIN_NO_FILESYSTEM_PERMS_NONE
43     auto checkThrow = [](path const& f, const std::error_code& ec)
44     {
45 #ifndef TEST_HAS_NO_EXCEPTIONS
46         try {
47             fs::remove_all(f);
48             return false;
49         } catch (filesystem_error const& err) {
50             return err.path1() == f
51                 && err.path2() == ""
52                 && err.code() == ec;
53         }
54 #else
55         ((void)f); ((void)ec);
56         return true;
57 #endif
58     };
59     const path non_empty_dir = env.create_dir("dir");
60     env.create_file(non_empty_dir / "file1", 42);
61     const path bad_perms_dir = env.create_dir("bad_dir");
62     const path file_in_bad_dir = env.create_file(bad_perms_dir / "file", 42);
63     permissions(bad_perms_dir, perms::none);
64     const path bad_perms_file = env.create_file("file2", 42);
65     permissions(bad_perms_file, perms::none);
66 
67     const path testCases[] = {
68         file_in_bad_dir
69     };
70     const auto BadRet = static_cast<std::uintmax_t>(-1);
71     for (auto& p : testCases) {
72         std::error_code ec;
73 
74         TEST_CHECK(fs::remove_all(p, ec) == BadRet);
75         TEST_CHECK(ec);
76         TEST_CHECK(checkThrow(p, ec));
77     }
78 #endif
79 
80     // PR#35780
81     const path testCasesNonexistant[] = {
82         "",
83         env.make_env_path("dne")
84     };
85     for (auto &p : testCasesNonexistant) {
86         std::error_code ec;
87 
88         TEST_CHECK(fs::remove_all(p, ec) == 0);
89         TEST_CHECK(!ec);
90     }
91 }
92 
93 TEST_CASE(basic_remove_all_test)
94 {
95     scoped_test_env env;
96     const path dne = env.make_env_path("dne");
97     const path link = env.create_symlink(dne, "link");
98     const path nested_link = env.make_env_path("nested_link");
99     create_symlink(link, nested_link);
100     const path testCases[] = {
101         env.create_file("file", 42),
102         env.create_dir("empty_dir"),
103         nested_link,
104         link
105     };
106     for (auto& p : testCases) {
107         std::error_code ec = std::make_error_code(std::errc::address_in_use);
108         TEST_CHECK(remove(p, ec));
109         TEST_CHECK(!ec);
110         TEST_CHECK(!exists(symlink_status(p)));
111     }
112 }
113 
114 TEST_CASE(symlink_to_dir)
115 {
116     scoped_test_env env;
117     const path dir = env.create_dir("dir");
118     const path file = env.create_file(dir / "file", 42);
119     const path link = env.create_directory_symlink(dir, "sym");
120 
121     {
122         std::error_code ec = std::make_error_code(std::errc::address_in_use);
123         TEST_CHECK(remove_all(link, ec) == 1);
124         TEST_CHECK(!ec);
125         TEST_CHECK(!exists(symlink_status(link)));
126         TEST_CHECK(exists(dir));
127         TEST_CHECK(exists(file));
128     }
129 }
130 
131 
132 TEST_CASE(nested_dir)
133 {
134     scoped_test_env env;
135     const path dir = env.create_dir("dir");
136     const path dir1 = env.create_dir(dir / "dir1");
137     const path out_of_dir_file = env.create_file("file1", 42);
138     const path all_files[] = {
139         dir, dir1,
140         env.create_file(dir / "file1", 42),
141         env.create_symlink(out_of_dir_file, dir / "sym1"),
142         env.create_file(dir1 / "file2", 42),
143         env.create_directory_symlink(dir, dir1 / "sym2")
144     };
145     const std::size_t expected_count = sizeof(all_files) / sizeof(all_files[0]);
146 
147     std::error_code ec = std::make_error_code(std::errc::address_in_use);
148     TEST_CHECK(remove_all(dir, ec) == expected_count);
149     TEST_CHECK(!ec);
150     for (auto const& p : all_files) {
151         TEST_CHECK(!exists(symlink_status(p)));
152     }
153     TEST_CHECK(exists(out_of_dir_file));
154 }
155 
156 TEST_SUITE_END()
157